Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2) matrix
metamorphic
Category
Man Made Material (Anthro Lithic Product)
Browse man made material (anthro lithic product) specimens identified by the Rock Identifier community.
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral / Sedimentary component
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limestone (specifically Chalky Limestone)
Calcium Carbonate (CaCO3 / Calcite)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pumice
Vesicular volcanic glass (primarily SiO2)
igneous
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Limestone (Coquina / Shell Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milk Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Native Silver
Silver (Ag)
mineral
Sandstone (Quartzite-rich)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Lepidolite on Pegmatite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite
igneous
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz / Limestone Gravel
SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)
igneous and sedimentary mixture
Chert with Asphaltum (or Tar)
Silica (SiO2) with natural Bitumen/Asphaltum
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Obsidian
Obsidian (Volcanic Glass)
igneous
Green Fluorite
Fluorite (Calcium Fluoride) - CaF2
mineral
Fossiliferous Limestone
Calcite (CaCO3) with Bioclastic inclusions
sedimentary
Diamond (in Jewelry Setting)
Carbon (C) - Isometric-Hexoctahedral
mineral
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Banded Iron Formation (BIF) / Tiger Iron variety
Banded Iron Formation (composed primarily of Magnetite Fe3O4, Hematite Fe2O3, and Chert/Quartz SiO2)
sedimentary
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Specular Hematite with Pyrite
Iron Oxide (Fe2O3) with Iron Sulfide (FeS2)
mineral
Quartzite (Milky Quartz pebble)
Silicon Dioxide (SiO2)
metamorphic
Quartz (Milky/Opaque variety)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral